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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "priv.h"
#include <core/pci.h>
struct priv {
struct pci_dev *pdev;
void __iomem *rom;
size_t size;
};
static u32
pcirom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
{
struct priv *priv = data;
if (offset + length <= priv->size) {
memcpy_fromio(bios->data + offset, priv->rom + offset, length);
return length;
}
return 0;
}
static void
pcirom_fini(void *data)
{
struct priv *priv = data;
pci_unmap_rom(priv->pdev, priv->rom);
pci_disable_rom(priv->pdev);
kfree(priv);
}
static void *
pcirom_init(struct nvkm_bios *bios, const char *name)
{
struct nvkm_device *device = bios->subdev.device;
struct priv *priv = NULL;
struct pci_dev *pdev;
int ret;
if (device->func->pci)
pdev = device->func->pci(device)->pdev;
else
return ERR_PTR(-ENODEV);
if (!(ret = pci_enable_rom(pdev))) {
if (ret = -ENOMEM,
(priv = kmalloc(sizeof(*priv), GFP_KERNEL))) {
if (ret = -EFAULT,
(priv->rom = pci_map_rom(pdev, &priv->size))) {
priv->pdev = pdev;
return priv;
}
kfree(priv);
}
pci_disable_rom(pdev);
}
return ERR_PTR(ret);
}
const struct nvbios_source
nvbios_pcirom = {
.name = "PCIROM",
.init = pcirom_init,
.fini = pcirom_fini,
.read = pcirom_read,
.rw = true,
};
static void *
platform_init(struct nvkm_bios *bios, const char *name)
{
struct nvkm_device *device = bios->subdev.device;
struct pci_dev *pdev;
struct priv *priv;
int ret = -ENOMEM;
if (device->func->pci)
pdev = device->func->pci(device)->pdev;
else
return ERR_PTR(-ENODEV);
if ((priv = kmalloc(sizeof(*priv), GFP_KERNEL))) {
if (ret = -ENODEV,
(priv->rom = pci_platform_rom(pdev, &priv->size)))
return priv;
kfree(priv);
}
return ERR_PTR(ret);
}
const struct nvbios_source
nvbios_platform = {
.name = "PLATFORM",
.init = platform_init,
.fini = (void(*)(void *))kfree,
.read = pcirom_read,
.rw = true,
};
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